Comal County reports first case of coronavirus

COVID-19: An undated photo provided by the National Institutes of Health, a transmission electron microscope image of 2019-nCoV, the virus that causes COVID-19, isolated from a patient in the United States emerging from the surface of cells cultured in a lab.

COVID-19: An undated photo provided by the National Institutes of Health, a transmission electron microscope image of 2019-nCoV, the virus that causes COVID-19, isolated from a patient in the United States

COVID-19: An undated photo provided by the National Institutes of Health, a transmission electron microscope image of 2019-nCoV, the virus that causes COVID-19, isolated from a patient in the United States emerging from the surface of cells cultured in a lab.

COVID-19: An undated photo provided by the National Institutes of Health, a transmission electron microscope image of 2019-nCoV, the virus that causes COVID-19, isolated from a patient in the United States